Lock for throttle-levers.



S. PITTS.

LOCK FOR THROTTLE LEVERS APPLICATION FILED JAN. 3. I9I4..

1,162,307. Patented Nov. 30, 1915.

llllllllllllll lm' SAMUEL PITTS, 'OF STRQNGHURST, ILLINOIS.

LOCK FOR THROTTLE-LEVERS.

"Application filed January 3, 1914.

To all whom it may concern Be it known that I, SAMUEL lrr'rs, a

citizen of the l nited States. residing at Stronghurst. in the county of Henderson and State of Illinois. have invented certain new and useful Improvements in locks for 'lhrottle-Levers, of which the following is a specification.

This invention relates to an improved throttle lever, and the principal object of the invention is to provide an improved lock whereby the lever may be held 'in a,

' closed position to prevent an unauthorized person from starting the machine.

Another object of the invention is to so construct the lock that the lever may be left in a position to permit the engine to run slowly and prevent the throttle from being opened any wider.

Another object of the invention is to so construct the lock that while the lever can not be moved to open .the throttle any wider, it may be moved to entirely close the throttle without releasing thelock.

This invention is illustrated in the accompanying drawings wherein- Figure 1 is a view showing the lever in a locked position; one of the side walls being broken awayoto show the manner of inountf ing the lock carried by the lever. Fig. 2 is a vertical sectional view taken along the line 2-2 of Fig. 1; Fig. 3 IS a fragmentary view of the latch lever to show that portion of the lever containing the locking disk.

.The numeral 10 indicates the outer-end portion of the valve stem. leading from a suitable throttle valve not shown. The

--outer end portion 11 of this valve stem 10 is reduced and has rigidly mounted thereon a latch lever by means of which the valve stem 10 may be turned. This latch lever is formed of two longitudinally-extending sections 12 and 13 which are secured at their free ends by means of the handle knob. 14 and which have their inner faces cut to form a passageway 15. The arcuate segme t 16 passes through the passageway 15 and is provided upon its lower edge with teeth which are engaged by a pawl carried by the lever.

A rod 17 is slidably mounted in a guide way 18 formed by abutting grooves in the sections 12 and 13 and is yieldably held in the normal position shown in Fig. 2, by means of a spiral spring 19 carried by the pin 20 and engaging the reduced lower end Specification of Letters Patent.

Patented Nov. 30, 1915.

Serial No. 810.249.

21 of the rod 17. The operating pin 22 is carried by the. rod and extends through a slot 23 formed in the section 12 to permit the rod to be moved downwardly against the tension of the'spring ill t0 a position to permit the securing pin 21 to be pressed'inwardly against the tension of the spring 25 into a slot 26 formed in the upper-end portion of the rod 17L A pawl 27 is slidably mounted in the upper endportion of the guide way 18 and is provided with a longitiulinally extending opening 28 in which fits the reduced upper end 29 ot the rod 17. A spiral spring 30 is coiled about the reduced upper end portion 29 ot the rod 18 and engages the lower end ofthe pawl 27 to normally hold the pawl in engagement withthe teeth of the segment 16.- The upper end 31 of the pawl is'bevcled so that when the pawl is iii-engagement with the teeth, the lever may be moved toward the right-hand end of the segment shown in Fig. 1, but will be prevented from moving toward the left hand end of the segment. A pin 32 extends-transversely through the opening 28 of the pawl and passes through a cut-out portion 33 formed in the upper-end portion of the rod17 to limit the longitudinal movement of the pawl and prevent the pawl from becoming. disengaged trom the rod. I

' A locking disk 31 is rotatably mounted in a circular pocket 35 by means of its pivot shaft 36 and carries a tooth 3'7. 37 is engaged by one end of a spring 38 which spring normally tends to rotatd the disk 34 and move the tooth into a notch39- formed in the rod 17. The section 12 of the lever'is provided with an enlargement forming a cover l0 positioned in alinement with the pocket 35 and provided with a keyhole 41 through which a key may be inserted to This tooth engage the heel 12 of the tooth 37and rotate the disk 31 to move the tooth out of the notch 39.

This improved rack lever is intended to be used particularly upon motor cycles and automobiles so that when the motor cycle is left at thev curb. the rod may be released and permitted to assume the position shown in l igs. 1 and 2. When in this position, it will be impossible for an unauthorized person to take the machine since hile the lever may be moved to stop the running of the motor, the lever can not be moved in the 0pposite direction to'open the throttle valve The pawl 27 by being slidably mounted and yieldably held in a normal position by the spring 30, permits the lever to be moved toward the right of Fig. 1 to close the throttle valve without the lock being re out of the notch 39. The rod 17 can then be moved, downwardly by means of the pin 22 and the pin-2d. moved into the socket- 26. The resiliencyof the spring 19 will cause a binding action between the inner end of the pin 2% and the bottom portion of the socket 26 and this will hold the rod in the lowered position with the pawl out of engagement with the segment 16. The key can then be withdrawn and the rod will remain in the lowered position. As soon as the rider has no further use for the machine and wishes to leave it at the curb or in a storage place, the lever maybe moved to eni moved outwardly by the spring 25 and permit the rod to be moved upwardly by the spring 19. As soon as the rod is moved upwardly a sufficient distance, the spring 38 willforce the free end of the tooth 37 into the notch 39 and securely lock the rod in the position and prevent the lever from being moved to open the throttle valve.

l Vhat is claimed is:

1. A lever provided with a transverselyextending passage Way and with a longitudinal-guide way leading from said passage way and-being also provided with a pocket positioned intermediate the length of said guide way, a rod slidably mounted in said guide way, a segment passing through said passage Way, a pawl slidably mounted within'said guide way upon one end of said rod, a sprin coiled about said rod and engaging said pawl to yieldably hold. the pawl in engagement with said segment, a spring mounted in the opposite-end portion of said guide way and engaging the end of said rod for yieldably holding said rod in a normal position, a disk rotatably mounted in said pocket, a tooth carried by said disk, a spring engaging said tooth for normally holding said. disk ina position tors-aid tooth to enter a notch formed in said rod, and said lever being provided with an opening through which a key may be passed to engage saidtooth and rotate said disk to move said tooth out of the notch formed in said rod.

2. A lever provided with a longitudinallya normal position to engage said rod.

3. A lever, a. carrying element slidably connected with said lever, means for yieldably holding said carrying element in a normal position, an engaging element slidably mounted upon the outer-end portion of said carrying element, means for yieldably holding said engaging element in a normal position, a locking element, and means for normally holding said locking element in a position to engage said carrying element.

al. A lever, a carrying member slidably connected with said lever, an engaging member movably carried by said carrying member, means for yield-ably holding said carrying member and engaging member in a normal position, means for moving said carrying member and engaging member against the tension of: the resilient means and holding said carrying member in a normal position, means for releasably holding said carrying member in an adjusted position, and means for releasably locking said carrying member in an adjusted position.

5. A lever provided with a longitudinally extending guideway, a rod slidably mounted in said. guidcway and provided with a notch, a disk rotatably carried by said lever and provided with a tooth, resilient means for normally holding said disk in a position for its tooth to enter the notch of said rod and means for normally holding said rod'in a raised position.

(3. A lover, a rod slidably carried by said lever, a locking element movably carried by said lover and adapted for interlocking engagement with said rod, means for normally holding said rod in a position to prevent interlocking engagement with said locking element, and means for normally holding said locking elen'mnt in a position to engage said rod. 1

In testimony whereof I aliix my signature in presence of two witnesses.

SAMUEL PITTS.

Witnesses O'r'rrs E. SHAn'rz, EARL L. Econ. 

